And many trojans have a chat feature, especially the remote admin tools favored by skiddies. I have once had a nice chat with a fellow via notepad.exe after I ran a backdoored crack for Acunetix. Rather hilarious if you have a second laptop with which you run Wireshark...

This is nothing too special apart from the fact the bad guy noticed his **** was being dissected and decided to ask who the hell was doing it.